code: def _function_proto(self):  # type: ignore
      func_proto = FunctionProto()
      func_proto.ParseFromString(self._function_body)
      return func_proto
  
file_path: onnx/onnx/defs/__init__.py
imports: from typing import List
  import onnx.onnx_cpp2py_export.defs
  from onnx import AttributeProto, FunctionProto
label_desc: Use image node_id 2 for calling a global function with example usage: _function_proto() and returns: func_proto